Answer:
The correct answer is: upper esophageal sphincter.
Explanation:
The alimentary canal is a very long tract responsible for the digestion of the food. It is composed of several organs with many different and important functions. The alimentary canal also has a few sphincters, which are muscular valves that open and close when needed for the food to pass or be retained.
The first sphincter is the upper esophageal sphincter. One particularity of this sphincter is that is one of the few sphincters in the body that opens and closes under our conscious control, which happens when we decide to swallow our food.
From the first to the last, the order of the sphincters in the gastrointestinal tract is: upper esophageal sphincter, lower esophageal sphincter or gastroesophageal sphincter, pyloric sphincter, ileocecal sphincter, and anus.
They form an ionic bond by exchanging one electron
Firstly, start by doing Punnett squares for each of the characteristics. Attached are the three Punnet squares, made by me, as they should look in end.
For each of the Punnet squares, one characteristic each, we find that half of the offspring will be heterozygous for that characteristic.
Therefore, according to the product rule, you should now multiply the quantity of heterozygous for each characteristic and then obtain the total part of the offspring that's fully heterozygous.

Ss×

Ll×

Rr=

SsLlRr
Total offspring×

=10
There is 10 plants in the total offspring that are heterozygous for all the considered three genes.
Answer:
B and C are correct
Explanation:
Gelatin also referred to as hydrolyzed collagen.collagen is a structural protein in animal and undergoes hydrolysis to form gelatin.
Gelatin appears as a translucent, colorless and flavorless food ingredient used as gelling agents in food, drugs and cosmetics.
When dry it is bristle and becomes gummy when moist.
Gummy bears are known for their chewiness and gelatin gives them the chewiness.
To clearly view the morphology of the prokaryotes, one needs a microscope with higher resolution i.e magnification of ×100. Use of oil for this purpose is important because it reduces the refraction of light as it travels from air to glass. this process increases the resolution of the microscope making it possible to view morphology of bacteria.